States "Name Unknown" - called left no message. Since this does not seem to be an 'authentic' phone number I am assuming it is bill collection/telemarketer
This number was on my caller ID on May 2 but they didn't leave a message. They called again on May 4. This time I decided the answer. The caller identified himself as working for the local electric utility and wanted to offer me a special rate. I hung up. This isn't necessarily a scam, but it IS a telemarketer and they DID illegally spoof an invalid phone number. Do not answer if they call.